Operations

Common Problems 117605

Ubuntu 20.04 LTS Failed to Start OpenVPN Service

🟡 Medium   ⏱ 5–30 min  Last verified: 8 August 2023 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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Debian 12 — sabnzbdplus — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — sabnzbdplus — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-13124 CVE-2021-29488 CVE-2023-34237 Upstream summary: SABnzbd 2.3.9 and 3.0.0Alpha2 has a command injection vulnerability in the web configuration interface that permits an authenticated user to execute arbitrary Python […]

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Debian 12 — libsolv — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libsolv — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 8 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-20532 CVE-2018-20533 CVE-2018-20534 CVE-2019-20387 CVE-2021-3200 CVE-2021-33928 CVE-2021-33929 CVE-2021-33930  +4 more Upstream summary: There is a NULL pointer dereference at ext/testcase.c (function testcase_read) in libsolvext.a in libsolv through 0.7.2 […]

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Common Problems 111770

Windows Server 2022 — Windows Event Forwarding subscriptions stop delivering events — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 8 August 2023 Affected versions: Windows Server 2022 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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Windows Server 2022 — KB5032252 — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5032252 — multiple vulnerabilities (15 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5032252 • MSRC update-guide entry Related CVEs: CVE-2023-36397 CVE-2023-36036 CVE-2023-36428 CVE-2023-36425 CVE-2023-36424 CVE-2023-36423 CVE-2023-36017 CVE-2023-36705  +7 more Affected components: Windows Server 2022 Windows Server 2022, 23H2 Edition (Server Core installation) Table of […]

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How to Configure AppArmor for Nginx on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure AppArmor for Nginx on Debian 12

Introduction Deploying configure apparmor for nginx on debian 12 on a Debian 12 Bookworm machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will […]

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Debian 12 — pgpdump — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — pgpdump — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 8 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-4021 Upstream summary: The read_binary function in buffer.c in pgpdump before 0.30 allows context-dependent attackers to cause a denial of service (infinite loop and CPU consumption) via crafted […]

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NetBSD 9.4 — gcc50 — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — gcc50 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2015-5276 Upstream summary: pkgsrc audit-packages flagged gcc50{,-libs}-[0-9]* for vulnerability class 'insufficiently-random-numbers'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5276 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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Ubuntu 22.04 — linux-gcp-5.19 — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — linux-gcp-5.19 — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 8 August 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6260-1 Related CVEs: CVE-2022-48502 CVE-2023-2640 CVE-2023-3090 CVE-2023-31248 CVE-2023-3141 CVE-2023-32629 CVE-2023-3389 CVE-2023-3390  +5 more Upstream summary: It was discovered that the NTFS file system implementation in the Linux kernel did not […]

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